2014年6月17日星期二

Human comfort index

studies have shown that the meteorological factors that affect human comfort , temperature , followed by humidity Thirdly wind . Bio - meteorological indicators reflect the combined effects of temperature, humidity , wind speed , human feelings are not the same . Human comfort index is built on the basis of meteorological elements forecast to reflect the physical feelings of the majority of the crowd integrated the meteorological indicators or parameters . Human comfort index forecasts are generally divided into 10 grades released . 10 , coolish . 9 , cool , and comfortable . 8 , cool and comfortable . 7 , and comfortable . 6 , more comfortable . 5 hotter . 4 , the morning and evening comfort sultry noon . 3 , noon on a hot , muggy night . Two sultry Beware of heat stroke . A very hot, to prevent heat stroke .

comfort index (SSD ) = ( 1.818t +18.18 ) ( 0.88 +0.002 f ) + ( t -32 )/( 45- t ) -3.2V +18.2 .

where t is the average temperature , f is the relative humidity , and v is the wind speed . 86-88,4 level

Human Comfort Index classification

the body feels very hot , very suited , Greece sure to stay cool and prevent heat stroke ;

80-85, 3 of Ji

on human feeling hot , very comfortable , Greece attention to heatstroke cooling ; of

76 - 79 , Level 2

the partial heat the body feels uncomfortable , cooling may be appropriate ;

71 -75 , 1

of human feeling warmer and more comfortable ;

59 -70 , 0

body feels the most comfortable , the most accepted ;

51-58, -1 level

human feeling was a bit cooler and more comfortable ;

39-50, -2 level

body feel cooler ( cool ) , not comfortable , keep warm ;

26-38, -3 level

the body feels very cold , very comfortable , hope attention to warm cold ;

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